diff --git a/src/core/ipv4/ip4_frag.c b/src/core/ipv4/ip4_frag.c
index cf681a71..b08dd3da 100644
--- a/src/core/ipv4/ip4_frag.c
+++ b/src/core/ipv4/ip4_frag.c
@@ -491,14 +491,12 @@ ip_reass_chain_frag_into_datagram_and_validate(struct ip_reassdata *ipr, struct
   }
   /* If we come here, not all fragments were received, yet! */
   return IP_REASS_VALIDATE_PBUF_QUEUED; /* not yet valid! */
-#if IP_REASS_CHECK_OVERLAP
 freepbuf:
   clen = pbuf_clen(new_p);
   LWIP_ASSERT("ip_reass_pbufcount >= clen", ip_reass_pbufcount >= clen);
   ip_reass_pbufcount = (u16_t)(ip_reass_pbufcount - clen);
   pbuf_free(new_p);
   return IP_REASS_VALIDATE_PBUF_DROPPED;
-#endif /* IP_REASS_CHECK_OVERLAP */
 }
 
 /**